Ahmed, Nabeel, Muddasir Naeem, and Tayyab Imran. “Computational Investigation of Second Harmonic Generation in KTP Crystals Using COMSOL”. Journal of Optics and Photonics Research (July 7, 2026). Accessed July 8, 2026. https://ojs.bonviewpress.com/index.php/JOPR/article/view/8747.